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STEAM MOTOR BOILER. No. 281,401. Patented July 17,1883..

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UNITED STATES PATENT OFFICE.

JOSEF SGHREIBER, OF VIENNA, AUSTRIA-HUNGARY.

STEAM-MOTOR BOILER.

SPECIFICATION forming part'of Letters Patent No. 281,401, dated July 17, 1883.

Application filed August 2h', 1882. (No model.) Patented in Germany October' 13, 1881, No. 9,355; in Austria-Hungary November 23, 1881, No.3l,339 and No. 43.326; in England December 3, 1881, No. 5,?93; in Belgium December 15, 1881, No. 56,369, and in France January 12, 1882, No. 146,079.

ifo aZZ whom it may concern/ .Beit known that I, JOSEF SCHREIBER, of Vienna, Austria, have invented, an Improved Steam-Motor Boiler 5 and I do hereby declare the following to be a full, clear, and exact description thereof.

My invention relates to certain improvements in steam-boilers; and it consists of a boiler-shell supported upon and within an inclosing casing or stand, within which the grate or heating apparatus is contained. A series of tubes depend from the bottom of the boiler into the furnace, and within these are suspended smaller circulatingtubes. The feedwater enters the boiler after passing through a heating-coil, and is caused to enter the small circulating-tubes, through which it is led to the bottom of the inclosing-tubes, converted into steam, and led through tubes to the upper part of the boiler without being reduced in temperature by passing through the body of water within the boiler. Steam for the engine is taken from the upper part of the steamspace, and passes by a pipe through the firespace, where it is superheated before its exit.

In the accompanying drawings, Figure l is a vertical section taken throughl the boiler and fire-place. Fig. 2 is a horizontal section. Fig. 3 is an enlarged View of the water' and steam tubes. Fig. 4 is a view of the heating apparatus. Fig. 5 is an enlarged view of a single tube.

A is the boiler, which is composed of an upper and a lower part flanged so as to be bolted together, as shown at a. This boiler rests upona support or stand, B, which may be of cast-iron, and has aring, b, at the top, upon which the flange a rests. This ring is perforated for the escape of heat and the gases of combustion into the exterior casing, d, which surrounds the upper part of the boiler, and thence to the chimney or flue e.

C are tubes, of copper or iron, whichare screwed or otherwise fixed tightly into the "bottom of the boiler. downward from the bottom of the boiler into These tubes project thei'heating-space, and are closed at the bottom.

D are tubes which are driven tightly into the upper/ends of the tubes C, projecting up into the steam-space above the highest waterline. Within the tubes C and D are fixed smaller tubes E, which are suspended centrally, their upper ends a short distance above the level of the bottom of the boiler, and their lower ends extending to near the bottom of the tubes C. The upper ends of these small tubes are closed, and short pipes F lead from the water-space of the boiler into these i11- terior tubes, and have openings downward, through which the water enters the tubes E, and, flowing downward into the highly-heated tubes C, is converted into steam, which immediately rises to the upper part or steamchamber of the boiler through the tubes C and D, without coming into contact with the water in the boiler, so as to become reduced in temperature or lose its elasticity, as in the ordinary form of boiler. This enables me to generate dry steam by employing a large proportionate heating-surface with the smallest amount of fuel.

L is a pipe through which steam is conducted to the engine. This pipe passes through the casing d, and isthen coiled two or more times around within the heating-chamber outside the tubes C, leading thence out through the exterior non-conducting casing, M, to the engine.

N is a cock or valve to control the steam,

anda is a small cock through which water may be blown off after steam is raised. This water is admitted into the pipe, before the fire is kindled, through the pipe J and cock K, and prevents the pipe L and coils from being burned or injured before they are filled with steam. This also serves to expose the water within the pipe to the heat of the fire, and thus generate steam much more rapidly than could otherwise be done. Water is supplied to the boiler, by means of any suitable apparatus, through the feed-pipe O, which may be coiled around within the re-space, so that the water will be heated before entering the boiler. v

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. The boiler A, composed of two parts supported upon the stand B, having the beveled 5 or inclined perforated ring1 I), through which the products of combustion may pass from below the lower part of the boiler to the space surrounding the upper part, and thence to the chimney, in combination with the surround- Io ing` casing, substantially as herein described.

2. The boiler' A, composed of two parts set in the stand B, as shown, in combination with the steam-pipe L, leading` from the upper part of the stealnspaee into the space surrounding 15 the lower part o1' the boiler, and thence into thefurnace, so as to be coiledy aroundexterior to the tubes C, and passing out to the engine, substantially as herein described.

3. The boiler A, constructed as shown, and having,` the superheati11g-pipe L, with its coil, 2o in combination with the pipe J, and cocks K and n, to admit and discharge water to and from the coil, substantially1 as and for the purpose described.v

In witness whereof I have hereunto set my 25 hand.

JOSEF SCHREIBER.

Vitnesses:

HANS KoTTAs, JAMES RILEY \Vn,\v1:1:. 

